From: Miklos Szeredi <mszeredi@redhat.com>
To: linux-fsdevel@vger.kernel.org
Cc: linux-kernel@vger.kernel.org, Richard Weinberger <richard@nod.at>
Subject: [PATCH 17/18] ubifs: convert to miscattr
Date: Wed, 3 Feb 2021 13:41:11 +0100 [thread overview]
Message-ID: <20210203124112.1182614-18-mszeredi@redhat.com> (raw)
In-Reply-To: <20210203124112.1182614-1-mszeredi@redhat.com>
Use the miscattr API to let the VFS handle locking, permission checking and
conversion.
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Cc: Richard Weinberger <richard@nod.at>
---
fs/ubifs/dir.c | 2 ++
fs/ubifs/file.c | 2 ++
fs/ubifs/ioctl.c | 73 ++++++++++++++++++++----------------------------
fs/ubifs/ubifs.h | 2 ++
4 files changed, 36 insertions(+), 43 deletions(-)
diff --git a/fs/ubifs/dir.c b/fs/ubifs/dir.c
index 9a6b8660425a..0e25e4c352eb 100644
--- a/fs/ubifs/dir.c
+++ b/fs/ubifs/dir.c
@@ -1635,6 +1635,8 @@ const struct inode_operations ubifs_dir_inode_operations = {
.listxattr = ubifs_listxattr,
.update_time = ubifs_update_time,
.tmpfile = ubifs_tmpfile,
+ .miscattr_get = ubifs_miscattr_get,
+ .miscattr_set = ubifs_miscattr_set,
};
const struct file_operations ubifs_dir_operations = {
diff --git a/fs/ubifs/file.c b/fs/ubifs/file.c
index 2bc7780d2963..3761bdc801bd 100644
--- a/fs/ubifs/file.c
+++ b/fs/ubifs/file.c
@@ -1647,6 +1647,8 @@ const struct inode_operations ubifs_file_inode_operations = {
.getattr = ubifs_getattr,
.listxattr = ubifs_listxattr,
.update_time = ubifs_update_time,
+ .miscattr_get = ubifs_miscattr_get,
+ .miscattr_set = ubifs_miscattr_set,
};
const struct inode_operations ubifs_symlink_inode_operations = {
diff --git a/fs/ubifs/ioctl.c b/fs/ubifs/ioctl.c
index 4363d85a3fd4..901530c56259 100644
--- a/fs/ubifs/ioctl.c
+++ b/fs/ubifs/ioctl.c
@@ -14,6 +14,7 @@
#include <linux/compat.h>
#include <linux/mount.h>
+#include <linux/miscattr.h>
#include "ubifs.h"
/* Need to be kept consistent with checked flags in ioctl2ubifs() */
@@ -103,7 +104,7 @@ static int ubifs2ioctl(int ubifs_flags)
static int setflags(struct inode *inode, int flags)
{
- int oldflags, err, release;
+ int err, release;
struct ubifs_inode *ui = ubifs_inode(inode);
struct ubifs_info *c = inode->i_sb->s_fs_info;
struct ubifs_budget_req req = { .dirtied_ino = 1,
@@ -114,11 +115,6 @@ static int setflags(struct inode *inode, int flags)
return err;
mutex_lock(&ui->ui_mutex);
- oldflags = ubifs2ioctl(ui->flags);
- err = vfs_ioc_setflags_prepare(inode, oldflags, flags);
- if (err)
- goto out_unlock;
-
ui->flags &= ~ioctl2ubifs(UBIFS_SETTABLE_IOCTL_FLAGS);
ui->flags |= ioctl2ubifs(flags);
ubifs_set_inode_flags(inode);
@@ -132,54 +128,45 @@ static int setflags(struct inode *inode, int flags)
if (IS_SYNC(inode))
err = write_inode_now(inode, 1);
return err;
-
-out_unlock:
- mutex_unlock(&ui->ui_mutex);
- ubifs_release_budget(c, &req);
- return err;
}
-long ubifs_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
+int ubifs_miscattr_get(struct dentry *dentry, struct miscattr *ma)
{
- int flags, err;
- struct inode *inode = file_inode(file);
+ struct inode *inode = d_inode(dentry);
+ int flags = ubifs2ioctl(ubifs_inode(inode)->flags);
- switch (cmd) {
- case FS_IOC_GETFLAGS:
- flags = ubifs2ioctl(ubifs_inode(inode)->flags);
+ dbg_gen("get flags: %#x, i_flags %#x", flags, inode->i_flags);
+ miscattr_fill_flags(ma, flags);
- dbg_gen("get flags: %#x, i_flags %#x", flags, inode->i_flags);
- return put_user(flags, (int __user *) arg);
+ return 0;
+}
- case FS_IOC_SETFLAGS: {
- if (IS_RDONLY(inode))
- return -EROFS;
+int ubifs_miscattr_set(struct dentry *dentry, struct miscattr *ma)
+{
+ struct inode *inode = d_inode(dentry);
+ int flags = ma->flags;
- if (!inode_owner_or_capable(inode))
- return -EACCES;
+ if (miscattr_has_xattr(ma))
+ return -EOPNOTSUPP;
- if (get_user(flags, (int __user *) arg))
- return -EFAULT;
+ if (flags & ~UBIFS_GETTABLE_IOCTL_FLAGS)
+ return -EOPNOTSUPP;
- if (flags & ~UBIFS_GETTABLE_IOCTL_FLAGS)
- return -EOPNOTSUPP;
- flags &= UBIFS_SETTABLE_IOCTL_FLAGS;
+ flags &= UBIFS_SETTABLE_IOCTL_FLAGS;
- if (!S_ISDIR(inode->i_mode))
- flags &= ~FS_DIRSYNC_FL;
+ if (!S_ISDIR(inode->i_mode))
+ flags &= ~FS_DIRSYNC_FL;
- /*
- * Make sure the file-system is read-write and make sure it
- * will not become read-only while we are changing the flags.
- */
- err = mnt_want_write_file(file);
- if (err)
- return err;
- dbg_gen("set flags: %#x, i_flags %#x", flags, inode->i_flags);
- err = setflags(inode, flags);
- mnt_drop_write_file(file);
- return err;
- }
+ dbg_gen("set flags: %#x, i_flags %#x", flags, inode->i_flags);
+ return setflags(inode, flags);
+}
+
+long ubifs_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
+{
+ int err;
+ struct inode *inode = file_inode(file);
+
+ switch (cmd) {
case FS_IOC_SET_ENCRYPTION_POLICY: {
struct ubifs_info *c = inode->i_sb->s_fs_info;
diff --git a/fs/ubifs/ubifs.h b/fs/ubifs/ubifs.h
index fc2cdde3b549..404ec58254e9 100644
--- a/fs/ubifs/ubifs.h
+++ b/fs/ubifs/ubifs.h
@@ -2052,6 +2052,8 @@ int ubifs_recover_size(struct ubifs_info *c, bool in_place);
void ubifs_destroy_size_tree(struct ubifs_info *c);
/* ioctl.c */
+int ubifs_miscattr_get(struct dentry *dentry, struct miscattr *ma);
+int ubifs_miscattr_set(struct dentry *dentry, struct miscattr *ma);
long ubifs_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
void ubifs_set_inode_flags(struct inode *inode);
#ifdef CONFIG_COMPAT
--
2.26.2
next prev parent reply other threads:[~2021-02-03 12:48 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-03 12:40 [PATCH 00/18] new API for FS_IOC_[GS]ETFLAGS/FS_IOC_FS[GS]ETXATTR Miklos Szeredi
2021-02-03 12:40 ` [PATCH 01/18] vfs: add miscattr ops Miklos Szeredi
2021-02-03 15:04 ` Jan Kara
2021-02-03 15:21 ` Miklos Szeredi
2021-03-23 0:23 ` Eric Biggers
2021-03-25 14:52 ` Miklos Szeredi
2021-03-25 15:17 ` Al Viro
2021-02-03 12:40 ` [PATCH 02/18] ecryptfs: stack " Miklos Szeredi
2021-02-03 12:40 ` [PATCH 03/18] ovl: stack miscattr Miklos Szeredi
2021-02-04 23:42 ` Vivek Goyal
2021-02-05 15:25 ` Miklos Szeredi
2021-02-05 15:28 ` Miklos Szeredi
2021-02-03 12:40 ` [PATCH 04/18] btrfs: convert to miscattr Miklos Szeredi
2021-02-03 12:40 ` [PATCH 05/18] ext2: " Miklos Szeredi
2021-02-03 12:41 ` [PATCH 06/18] ext4: " Miklos Szeredi
2021-02-03 12:41 ` [PATCH 07/18] f2fs: " Miklos Szeredi
2021-03-23 0:28 ` Eric Biggers
2021-02-03 12:41 ` [PATCH 08/18] gfs2: " Miklos Szeredi
2021-02-03 12:41 ` [PATCH 09/18] orangefs: " Miklos Szeredi
2021-02-03 12:41 ` [PATCH 10/18] xfs: " Miklos Szeredi
2021-02-03 12:41 ` [PATCH 11/18] efivars: " Miklos Szeredi
2021-02-03 12:41 ` [PATCH 12/18] hfsplus: " Miklos Szeredi
2021-02-03 12:41 ` [PATCH 13/18] jfs: " Miklos Szeredi
2021-02-03 12:41 ` [PATCH 14/18] nilfs2: " Miklos Szeredi
2021-02-03 12:41 ` [PATCH 15/18] ocfs2: " Miklos Szeredi
2021-02-03 12:41 ` [PATCH 16/18] reiserfs: " Miklos Szeredi
2021-02-03 12:41 ` Miklos Szeredi [this message]
2021-02-03 12:41 ` [PATCH 18/18] vfs: remove unused ioctl helpers Miklos Szeredi
2021-02-03 13:05 ` [PATCH 00/18] new API for FS_IOC_[GS]ETFLAGS/FS_IOC_FS[GS]ETXATTR Matthew Wilcox
2021-02-03 13:13 ` Miklos Szeredi
2021-02-03 13:58 ` Matthew Wilcox
2021-02-03 14:13 ` Miklos Szeredi
2021-02-03 14:28 ` Matthew Wilcox
2021-02-03 14:38 ` Miklos Szeredi
2021-02-03 14:56 ` Matthew Wilcox
2021-02-03 15:03 ` Miklos Szeredi
2021-02-08 2:00 ` Dave Chinner
2021-02-08 8:25 ` Miklos Szeredi
2021-02-08 14:02 ` Matthew Wilcox
2021-02-08 14:52 ` Miklos Szeredi
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